WALLACE: There's been a lot of buzz, as we said, in Republican circles that there's no true conservative in the GOP presidential field. Now some top Republicans, including your friend former Tennessee senator Howard Baker, are putting out trial balloons about you possibly entering the race.
Question: Are you considering running for president in 2008?
THOMPSON: I'm giving some thought to it. Going to leave the door open.
the full Fox interview
AP: Fred Thompson says he's considering 2008 presidential run